converting an asphalt modified to dirt??

[hath27]

We have a Torino stub asphalt modified that we are considering converting to run dirt (asphalt track killed our class, and we cant find a buyer for it).

It is currently a 3-link rear, and I would like to to convert it to a 4-bar LR, Z-link RR.

Where can I get some brackets, and if possible some mounting instructions for the brackets?

Also, is the torino stub any good on the dirt?

[ryan15x]

http://cgi.ebay.com/ebaymotors/IMCA-...item27b8739d99

Here are some we have been making.